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The Housefly Effect and Other Nudges That Change Behavior | Brainfluence

Dec 16, 2025 · 29m

Summary

Roger Dooley interviews Eva van den Broek and Tim den Heyer, authors of *The Housefly Effect*, about how subtle environmental cues drive behavior. They discuss the "effect effect" of naming phenomena, the Dunning-Kruger effect in marketing, and political messaging simplicity. The conversation also covers the pratfall effect, the Cobra effect of unintended consequences, and the value of early behavioral insights.

Topics discussed

Sponsors: Whole Foods and HomeServe Introduction to Eva van den Broek and Tim den Heyer The Housefly Effect and the urinal story The Effect Effect: Naming phenomena for impact Dunning-Kruger effect in marketing and expertise Political messaging, simplicity, and the But You Are Free effect The Pratfall Effect and brand imperfections The Cobra Effect and unintended consequences Integrating behavioral science early in policy and business Conclusion and resources
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